CN101814870B - Solar trench type temperature-difference generating device - Google Patents
Solar trench type temperature-difference generating device Download PDFInfo
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- CN101814870B CN101814870B CN2010101623798A CN201010162379A CN101814870B CN 101814870 B CN101814870 B CN 101814870B CN 2010101623798 A CN2010101623798 A CN 2010101623798A CN 201010162379 A CN201010162379 A CN 201010162379A CN 101814870 B CN101814870 B CN 101814870B
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Abstract
The invention provides a solar trench type temperature-difference generating device which has no noise, no harmful substance emission, simple structure and low cost. The generating device comprises a condensing reflector, a solar heat collector, a lower temperature-difference chip generating module, an upper temperature-difference chip generating module, an energy storage material container and a glass pipeline, wherein the lower temperature-difference chip generating module and the upper temperature-difference chip generating module are connected in series or in parallel, the solar heat collector is fixed in a position between the center of the reflecting surface of the condensing reflector and the focus of the condensing reflector, the lower temperature-difference chip generating module is pasted on the heat collecting plate of the solar heat collector, the energy storage material container is fixed between the lower temperature-difference chip generating module and the upper temperature-difference chip generating module, the glass pipeline is installed on the top of the upper temperature-difference chip generating module, and the condensing reflector and the energy storage material container are fixed by a bracket. The invention has the advantages of simple structure and low price, and is applicable to civil use.
Description
Technical field
The present invention relates to the solar energy generation technology field, particularly solar groove type temperature difference chip generating device.
Background technology
Traditional solar energy thermal-power-generating is the device that the solar radiation heat energy that will absorb converts electric energy to.The power conversion mode of solar energy thermal-power-generating is indirect, stand the same with traditional thermal power generation (or nuclear power), solar energy (chemical energy or nuclear energy) converts heat energy to through solar collector earlier, and the work of logical overheated machine converts mechanical energy to again, converts electric energy to by generator more at last.In these conversion regimes, generally all relate to the mutual conversion of heat energy and mechanical energy, thereby the mechanical part of the circulation and the motion of working medium is arranged.When recurring a series of power conversion, total conversion efficiency is the product of each transfer process efficient.Therefore, say in principle that indirect conversion is unfavorable for improving conversion efficiency, should cut down the number of intermediate links as far as possible.Solar energy thermal-power-generating has polytype, mainly contains following five kinds: tower system, slot type system, disc type system, solar pond and the generating of solar column thermal current, and first three kind is the light-focusing type solar electricity generation system, back two kinds is non-light-focusing type.For tower system, the optically focused field also needs further research with the optimization of matching problem of heat absorption field; For the slot type system, the life-span of vacuum tube is not verified on a large scale that also the replacement cost of heliostat is too high; For the disc type system, also there is not Stirling-electric hybrid business-like and disc type concentrator coupling on the market.Traditional solar energy thermal-power-generating mode is all made prime mover with generator or steam turbine, and noise is very big, and generally causes changes of environment and pollution.In addition, the system of these band moving components has all comprised considerable maintenance workload and necessary operation and maintenance cost, only could obtain the good technical index in the bigger occasion of generate output.Comprehensive present research situation, thermo-electric generation has demonstrated superiority in this respect, is one of solar energy source effective way of directly being converted to the secondary energy sources-electric energy that can directly utilize.
Traditional solar energy power generating is according to the photovoltaic effect principle, utilizes solar cell that solar energy is converted into electric energy.For photovoltaic power generation technology, " weakness " that also exists some to remain to be captured, as: the photovoltaic generation cost is higher, and there is lack of raw materials for silicon, and 90% needs import, and optoelectronic transformation efficiency is lower, needs bigger spatial area and required illumination to require complexity etc.
Could produce bigger power when at present the temperature difference that requires of thermo-electric generation is big, so temperature difference chip electricity generation module a spot of cogeneration or the low power Blast Furnace Top Gas Recovery Turbine Unit (TRT) of being applied to of generation mode as a supplement.Because the energy density of solar energy does not reach the temperature difference requirement of thermo-electric generation for a short time, solar energy can only be limited to the application of heat generating and photovoltaic generation, so temperature difference chip electricity generation module seldom is utilized on solar energy generation technology.
Summary of the invention
The objective of the invention is to have overcome the deficiencies in the prior art, a kind of noiselessness, unharmful substance discharging, simple in structure, that cost is low and solar trench type temperature-difference generating device that can carry out uninterruptable power generation round the clock are provided.
For solving the problems of the technologies described above, technical scheme of the present invention is:
Solar trench type temperature-difference generating device of the present invention, comprise the optically focused reflector, solar collector, following temperature difference chip electricity generation module, last temperature difference chip electricity generation module, energy storage material case and glass pipe, wherein descending temperature difference chip electricity generation module is that serial or parallel connection is connected with last temperature difference chip electricity generation module, solar collector is fixed on the reflecting surface center of optically focused reflector to the position between its focus, following temperature difference chip electricity generation module is attached on the thermal-arrest plate of solar collector, between temperature difference chip electricity generation module and the last temperature difference chip electricity generation module, glass pipe was installed in the top of temperature difference chip electricity generation module under the energy storage material case was fixed in; Optically focused reflector and energy storage material case are fixed with support.
Described optically focused reflector adopts the slot light collection reflector, and posts the light reflecting membrane of aluminizing on its slot type reflecting plate.
Plate solar spectral selective absorbing coating on the thermal-arrest plate of described solar collector.
Described solar collector connects vacuum pump, to keep certain vacuum degree
Described glass pipe connects vacuum pump, to keep certain vacuum degree.
Semiconductor temperature differential generating chip in described temperature difference chip electricity generation module down and the last temperature difference chip electricity generation module adopts N type and the P type high strength bismuth telluride-base thermoelectric material through the zone-melting process preparation.Series connection constitutes temperature-difference power generation module to P type and N type electricity arm by many, the rectangular cross section of thermoelement, and the copper electric conductor connects P, N type element and forms complete line as electrode, is coupled with thermal source and low-temperature receiver at two ends with potsherd.
Between the upper and lower base plate in the described energy storage material case a plurality of aluminium sheet fins are set, described aluminium sheet fin can be fixed in the energy storage material box body by the mode of welding.
Described a plurality of aluminium sheet fin is transversely arranged, places the high-termal conductivity phase-changing energy storage material between the adjacent aluminum plates fin.
The present invention with respect to the beneficial effect of prior art is:
(1) the semiconductor temperature differential generating sheet replaces traditional electrification component, has movement-less part, noiseless and does not need advantage such as maintenance, can simplify the structure of solar power system greatly;
(2) can satisfy the requirement of centering, little energy output according to the flexible quantity of adjusting thermo-electric generation chip in the temperature-difference power generation module of load.
(3) new type solar energy temperature difference chip electricity generation system adopts phase change energy storage technology, ensure and effectively use solar energy and time delay is provided, its distinguishing feature is to carry out uninterruptable power generation round the clock, semiconductor temperature difference chip electricity generation system is combined with the phase-change accumulation energy system, form advanced person's solar energy temperature difference chip uninterruptable power generation efficiently heat reservoir.
(4) the invention provides a kind of civil nature, the simple in structure and cheap solar power generation new way utilized.
Description of drawings
Fig. 1 is the structural representation of Blast Furnace Top Gas Recovery Turbine Unit (TRT) of the present invention;
Fig. 2 is the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of the present invention work schematic diagram on daytime;
Fig. 3 is the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of the present invention work schematic diagram at night;
Fig. 4 is the temperature difference chip electricity generation module section of structure among Fig. 1;
Fig. 5 is the energy storage material case A-A sectional view of Fig. 1.
Embodiment
The present invention is further detailed explanation by embodiment below in conjunction with accompanying drawing.
Referring to Fig. 1, solar trench type temperature-difference generating device of the present invention, comprise optically focused reflector 2, solar collector 3, following temperature difference chip electricity generation module 4, last temperature difference chip electricity generation module 6, energy storage material case 5 and glass pipe 7, wherein temperature difference chip electricity generation module 4 is that serial or parallel connection is connected with last temperature difference chip electricity generation module 6, the reflecting surface center that solar collector 3 is fixed on optically focused reflector 2 is to being on the position between its focus, following temperature difference chip electricity generation module 4 is attached on the thermal-arrest plate of solar collector 3, between temperature difference chip electricity generation module 4 and the last temperature difference chip electricity generation module 6, glass pipe 7 was installed in the top of temperature difference chip electricity generation module 6 under employing energy storage material case 5 was fixed in; Optically focused reflector 2 and energy storage material case 5 usefulness supports 1 are fixing.
Optically focused reflector 2 adopts the slot light collection reflectors, and posts the high-efficiency solar range light reflecting membrane of aluminizing on its slot type reflecting plate.
The thermal-arrest plate of solar collector 3 utilizes magnetron sputtering technology to plate efficient high-efficiency solar spectral selective absorbing coating.
Semiconductor temperature differential generating chip in following temperature difference chip electricity generation module 4 and the last temperature difference chip electricity generation module 6 adopts N type and the P type high strength bismuth telluride-base thermoelectric material through the zone-melting process preparation.
Fig. 4 be in 41 for the high-purity alumina ceramic sheet, 42 is thermal conductive insulator, 43 is P or N type thermoelement, 44 is copper electrode, 45 is output lead, the rectangular cross section of thermoelectric chip.P in the structure, N type element utilize the copper electrode to connect, and with high-purity oxidation Al
2O
3The aluminium potsherd is in huyashi-chuuka (cold chinese-style noodles) and hot side and extraneous coupling.Electrically insulated from one another between thermoelement, potsherd, thermal source three.By the hot junction, on the hot road that thermoelement and cold junction are formed, minimum resistance is arranged on the hot road by contact-making surface being carried out Surface Machining and coat high thermal conductive silicon glue thin layer, making.
Referring to Fig. 5, the a plurality of aluminium sheet fins 51 of welding between the upper and lower base plate in the energy storage material case 5, a plurality of aluminium sheet fins 51 are transversely arranged, place the high-termal conductivity phase-changing energy storage material between the adjacent aluminum plates fin 51, be spaced apart 10mm between the adjacent aluminum plates fin 51, the quantity of aluminium sheet fin 51 is adjusted according to the size of energy storage material case 5; The big palpulus of energy storage material case 5 meets user's energy storage requirement.
Optically focused reflector 2 adopts the slot type reflectance coating to arrive solar collector 3 to solar light focusing, and the temperature on the thermal-arrest plate can be up to more than 200 degrees centigrade; According to Seebeck effect, with the end of two kinds of dissimilar thermo-electric converting material N and P in conjunction with and be placed on the condition of high temperature, other end open circuit is also given when keeping low temperature, because the thermal excitation effect is stronger, the hole of temperature end (electronics) concentration ratio low-temperature end is big, therefore under the driving of this concentration gradient, hole (electronics) will spread to low-temperature end from temperature end, and the accumulation of this electric charge will become electrical potential difference; The temperature gradient at two ends is big more, and the electromotive force of generation is just big more, and under the constant situation of internal resistance, generated output is also just big more.Therefore when the heating surface of temperature difference chip electricity generation module connects solar collector 3, form certain temperature gradient, can generate electricity.
Referring to Fig. 2, the work schematic diagram on solar trench type temperature-difference generating device of the present invention daytime, daytime, connect vacuum pump, make solar collector 3 and glass pipe 7 keep the certain vacuum degree, when sunlight 8 impinges upon on the optically focused reflector 2,, focus on the solar collector 3 by 2 reflections of optically focused reflector.Solar collector 3 absorbs by optically focused reflector 2 assembles the solar heat energy that reflection comes.The heat energy that solar collector 3 absorbs is delivered to down the lower end board of temperature difference chip electricity generation module 4 by the thermal-arrest plate, upper end plate by following temperature difference chip electricity generation module 4 dispels the heat to the phase-changing energy storage material in the energy storage material case 5 again, energy storage material is given the lower end board heat supply of last temperature difference chip electricity generation module 6, and the upper end plate of last temperature difference chip electricity generation module 6 dispels the heat to the air ambient of glass pipe 7.On daytime, until glass pipe 7 temperature reduce gradually, form the temperature gradient of temperature difference chip electricity generation module and generate electricity from solar collector 3.
Referring to Fig. 3, the work schematic diagram at solar trench type temperature-difference generating device of the present invention night, open vacuum pump evening, glass pipe 7 blowing airs, allow down the lower end board of temperature difference chip electricity generation module 4 dispel the heat, the upper end plate of temperature difference chip electricity generation module 4 and the lower end board heat supply of last temperature difference chip electricity generation module 6 under energy storage material in the energy storage material case 5 is given, the upper end plate of last temperature difference chip electricity generation module 6 dispels the heat to the air ambient of glass pipe 7.Evening, temperature difference chip electricity generation module 4-solar collector 3 and go up temperature difference chip electricity generation module 6-glass pipe 7 temperature from energy storage material case 5-and reduce gradually under the energy storage material case 5-also forms 6 liang of groups of temperature difference chip electricity generation module 4 and last temperature difference chip electricity generation module temperature difference chip generating down.
The present invention passes through automatic control system, detect the temperature of solar collector 3 to glass pipe 7, analyze the temperature difference of energy storage material, glass pipe 7 and surrounding air in the energy storage material case 5, determine that pipeline solar collector 3 and glass pipe 7 are to vacuumize insulation, still logical cooling air has been guaranteed temperature difference chip electricity generation module 4 and the needed two ends of last temperature difference chip electricity generation module 6 generatings temperature difference condition down.
Claims (8)
1. solar trench type temperature-difference generating device, comprise optically focused reflector (2), it is characterized in that: also comprise solar collector (3), following temperature difference chip electricity generation module (4), last temperature difference chip electricity generation module (6), energy storage material case (5) and glass pipe (7), wherein descending temperature difference chip electricity generation module (4) is that serial or parallel connection is connected with last temperature difference chip electricity generation module (6), solar collector (3) is fixed on the reflecting surface center of optically focused reflector (2) to the position between its focus, following temperature difference chip electricity generation module (4) is attached on the thermal-arrest plate of solar collector (3), between temperature difference chip electricity generation module (4) and the last temperature difference chip electricity generation module (6), glass pipe (7) was installed in the top of temperature difference chip electricity generation module (6) under energy storage material case (5) was fixed in; Optically focused reflector (2) and energy storage material case (5) are fixing with support (1).
2. solar trench type temperature-difference generating device according to claim 1 is characterized in that: described optically focused reflector (2) adopts the slot light collection reflector, and posts the light reflecting membrane of aluminizing on its slot type reflecting plate.
3. solar trench type temperature-difference generating device according to claim 1 is characterized in that: be coated with solar spectral selective absorbing coating on the thermal-arrest plate of described solar collector (3).
4. solar trench type temperature-difference generating device according to claim 1 is characterized in that: described solar collector (3) connects vacuum pump.
5. solar trench type temperature-difference generating device according to claim 1 is characterized in that: described glass pipe (7) connects vacuum pump.
6. solar trench type temperature-difference generating device according to claim 1 is characterized in that: the semiconductor temperature differential generating chip in described temperature difference chip electricity generation module (4) down and the last temperature difference chip electricity generation module (6) adopts N type and the P type bismuth telluride-base thermoelectric material through the zone-melting process preparation.
7. solar trench type temperature-difference generating device according to claim 1 is characterized in that: between the upper and lower base plate in the described energy storage material case (5) a plurality of aluminium sheet fins (51) are set.
8. solar trench type temperature-difference generating device according to claim 7 is characterized in that: described a plurality of aluminium sheet fins (51) are transversely arranged, and the adjacent aluminum plates fin is placed phase-changing energy storage material between (51).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101623798A CN101814870B (en) | 2010-04-27 | 2010-04-27 | Solar trench type temperature-difference generating device |
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| CN2010101623798A CN101814870B (en) | 2010-04-27 | 2010-04-27 | Solar trench type temperature-difference generating device |
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| CN101814870A CN101814870A (en) | 2010-08-25 |
| CN101814870B true CN101814870B (en) | 2011-12-28 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102544346A (en) * | 2010-12-24 | 2012-07-04 | 中国电子科技集团公司第十八研究所 | Bismuth telluride thermoelectric generator |
| CN105605803B (en) * | 2015-04-07 | 2018-06-22 | 赵炜 | A kind of tube plate structure solar energy collector system that absorption film is set |
| CN105650904B (en) * | 2015-04-07 | 2018-03-13 | 温州卡耐夫电器有限公司 | A kind of solar energy system |
| CN105375823B (en) * | 2015-12-07 | 2018-05-11 | 珠海格力电器股份有限公司 | Power generator, solar water generating equipment and power station |
| CN113952908B (en) * | 2021-10-08 | 2023-12-05 | 浙江高晟光热发电技术研究院有限公司 | Photocatalysis hydrogen production device and hydrogen production system |
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| CN1329555C (en) * | 2003-08-29 | 2007-08-01 | 王东儒 | Preparation of hydrogen using time temperature difference energy |
| CN100471002C (en) * | 2006-04-21 | 2009-03-18 | 江苏大学 | Thermoelectric battery and accumulator co-used power supply system |
| CN1987288B (en) * | 2006-11-03 | 2010-05-12 | 江苏大学 | Solar energy comprehensive utilizing system |
| CN201256368Y (en) * | 2008-07-23 | 2009-06-10 | 黄加玉 | High efficiency low cost solar energy cogeneration system |
| CN101635542A (en) * | 2009-05-26 | 2010-01-27 | 吴江市宇欣电器有限公司 | Solar generator |
| CN101645670A (en) * | 2009-09-09 | 2010-02-10 | 哈尔滨工程大学 | Integrated energy conversion and utilization system |
| CN101644509A (en) * | 2009-09-11 | 2010-02-10 | 北京科技大学 | Solar energy water heater afterheat comprehensive using device |
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